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Xian Z, Chen Y, Li N, Zhu T. Advances in the synthesis of heteroatom-doped graphene-based materials and their application in sensors, adsorbents and catalysis. Analyst 2023; 148:6201-6222. [PMID: 37921459 DOI: 10.1039/d3an01401k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2023]
Abstract
In recent years, as a new type of carbon material, graphene has attracted much attention owing to its high conductivity, large specific surface area and excellent chemical stability. After introducing heteroatoms into graphene, the physical, chemical and biological properties of doped graphene are significantly enhanced. This review focuses on synthesis methods for N, B, P and S co-doped graphene and graphene-based composites and comprehensively discusses their recent applications in the fields of sensors, adsorbents and catalysis. The challenges and application prospects of heteroatom doped graphene materials are also proposed. This study provides a reference and guidance for the development and application of new doped graphene materials.
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Affiliation(s)
- Ziwei Xian
- College of Pharmaceutical Sciences, Institute of Life Science and Green Development, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Key Laboratory of Public Health Safety of Hebei Province, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, 071002, China.
| | - Yanmei Chen
- College of Pharmaceutical Sciences, Institute of Life Science and Green Development, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Key Laboratory of Public Health Safety of Hebei Province, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, 071002, China.
| | - Na Li
- College of Pharmaceutical Sciences, Institute of Life Science and Green Development, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Key Laboratory of Public Health Safety of Hebei Province, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, 071002, China.
| | - Tao Zhu
- College of Pharmaceutical Sciences, Institute of Life Science and Green Development, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Key Laboratory of Public Health Safety of Hebei Province, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, 071002, China.
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2
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Guo Y, Wang R, Wei C, Li Y, Fang T, Tao T. Carbon quantum dots for fluorescent detection of nitrite: A review. Food Chem 2023; 415:135749. [PMID: 36848836 DOI: 10.1016/j.foodchem.2023.135749] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 01/31/2023] [Accepted: 02/17/2023] [Indexed: 02/22/2023]
Abstract
NO2- is commonly found in foods and the environment, and excessive intake of NO2- poses serious hazards to human health. Thus, rapid and accurate assay of NO2- is of considerable significance. Traditional instrumental approaches for detection of NO2- faced with limitations of expensive instruments and complicated operations. Current gold standards for sensing NO2- are Griess assay and 2,3-diaminonaphthalene assay, which suffer from slow detection kinetics and bad water solubility. The newly emerged carbon quantum dots (CQDs) exhibit integrated merits including easy fabrication, low-cost, high quantum yield, excellent photostability, tunable emission behavior, good water solubility and low toxicity, which make CQDs be widely applied to fluorescent assay of NO2-. In this review, synthetic strategies of CQDs are briefly presented. Advances of CQDs for fluorescent detection of NO2- are systematically highlighted. Lastly, the challenges and perspectives in the field are discussed.
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Affiliation(s)
- Yongming Guo
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing 210044, China.
| | - Ruiqing Wang
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Chengwei Wei
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Yijin Li
- Reading Academy, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Tiancheng Fang
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Tao Tao
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing 210044, China.
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3
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Llaver M, Barrionuevo SD, Troiani H, Wuilloud RG, Ibañez FJ. Highly Selective and Sensitive Fluorescent Determination of Fe3+ within Alcoholic Beverages with 1,5-Diphenylcarbazone-Functionalized Graphene Quantum Dots. TALANTA OPEN 2023. [DOI: 10.1016/j.talo.2023.100202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023] Open
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Denis PA. Heteroatom Codoped Graphene: The Importance of Nitrogen. ACS OMEGA 2022; 7:45935-45961. [PMID: 36570263 PMCID: PMC9773818 DOI: 10.1021/acsomega.2c06010] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 11/17/2022] [Indexed: 06/17/2023]
Abstract
Although graphene has exceptional properties, they are not enough to solve the extensive list of pressing world problems. The substitutional doping of graphene using heteroatoms is one of the preferred methods to adjust the physicochemical properties of graphene. Much effort has been made to dope graphene using a single dopant. However, in recent years, substantial efforts have been made to dope graphene using two or more dopants. This review summarizes all the hard work done to synthesize, characterize, and develop new technologies using codoped, tridoped, and quaternary doped graphene. First, I discuss a simple question that has a complicated answer: When can an atom be considered a dopant? Then, I briefly discuss the single atom doped graphene as a starting point for this review's primary objective: codoped or dual-doped graphene. I extend the discussion to include tridoped and quaternary doped graphene. I review most of the systems that have been synthesized or studied theoretically and the areas in which they have been used to develop new technologies. Finally, I discuss the challenges and prospects that will shape the future of this fascinating field. It will be shown that most of the graphene systems that have been reported involve the use of nitrogen, and much effort is needed to develop codoped graphene systems that do not rely on the stabilizing effects of nitrogen. I expect that this review will contribute to introducing more researchers to this fascinating field and enlarge the list of codoped graphene systems that have been synthesized.
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Gumus E, Bingol H, Zor E. Nanomaterials-enriched sensors for detection of chiral pharmaceuticals. J Pharm Biomed Anal 2022; 221:115031. [PMID: 36115205 DOI: 10.1016/j.jpba.2022.115031] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 09/02/2022] [Accepted: 09/04/2022] [Indexed: 10/31/2022]
Abstract
Advancements in nanoscience and nanotechnology have opened new pathways to fabricate novel nanostructures with interesting properties that would be used for different applications. In this respect, nanostructures comprising chirality are one of the most rapidly developing research fields encompassing chemistry, physics and biology. Chirality, also known as mirror asymmetry, describes the geometrical property of an object that is not superimposable on its mirror image. This characteristic plays a crucial role because these identical forms of chiral species in pharmaceuticals or food additives may exhibit different effects on living organisms. Therefore, chiral analysis is an important field of modern chemical analysis in health-related industries that are reliant on the production of enantiomeric compounds involving pharmaceuticals. This review covers the recent advances dealing with the synthesis, design and advantageous analytical performance of nanomaterials-enriched sensors used for chiral pharmaceuticals. We conclude this review with the challenges existing in this research field and our perspectives on some potential strategies with cutting-edge approaches for the rational design of sensors for chiral pharmaceuticals. We expect this comprehensive review will inspire future studies in nanomaterials-enriched chiral sensors.
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Affiliation(s)
- Eda Gumus
- Biomaterials and Biotechnology Laboratory, Science and Technology Research and Application Center (BITAM), Necmettin Erbakan University, 42140 Konya, Turkey
| | - Haluk Bingol
- Biomaterials and Biotechnology Laboratory, Science and Technology Research and Application Center (BITAM), Necmettin Erbakan University, 42140 Konya, Turkey; Department of Chemistry Education, A.K. Education Faculty, Necmettin Erbakan University, 42090 Konya, Turkey
| | - Erhan Zor
- Biomaterials and Biotechnology Laboratory, Science and Technology Research and Application Center (BITAM), Necmettin Erbakan University, 42140 Konya, Turkey; Department of Science Education, A.K. Education Faculty, Necmettin Erbakan University, 42090 Konya, Turkey.
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Sengottuvelu D, Shaik AK, Mishra S, Ahmad H, Abbaszadeh M, Hammer NI, Kundu S. Multicolor Nitrogen-Doped Carbon Quantum Dots for Environment-Dependent Emission Tuning. ACS OMEGA 2022; 7:27742-27754. [PMID: 35967036 PMCID: PMC9366982 DOI: 10.1021/acsomega.2c03912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
Carbon quantum dots (CQDs) have potential applications in many fields such as light-emitting devices, photocatalysis, and bioimaging due to their unique photoluminescence (PL) properties and environmental benignness. Here, we report the synthesis of nitrogen-doped carbon quantum dots (NCQDs) from citric acid and m-phenylenediamine using a one-pot hydrothermal approach. The environment-dependent emission changes of NCQDs were extensively investigated in various solvents, in the solid state, and in physically assembled PMMA-PnBA-PMMA copolymer gels in 2-ethyl-hexanol. NCQDs display bright emissions in various solvents as well as in the solid state. These NCQDs exhibit multicolor PL emission across the visible region upon changing the environment (solutions and polymer matrices). NCQDs also exhibit excitation-dependent PL and solvatochromism, which have not been frequently investigated in CQDs. Most CQDs are nonemissive in the aggregated or solid state due to the aggregation-caused quenching (ACQ) effect, limiting their solid-state applications. However, NCQDs synthesized here display a strong solid-state emission centered at 568 nm attributed to the presence of surface functional groups that restrict the π-π interaction between the NCQDs and assist in overcoming the ACQ effect in the solid state. NCQD-containing gels display significant fluorescence enhancement in comparison to the NCQDs in 2-ethyl hexanol, likely because of the interaction between the polar PMMA blocks and NCQDs. The application of NCQDs-Gel as a solid/gel state fluorescent display has been presented. This research facilitates the development of large-scale, low-cost multicolor phosphor for the fabrication of optoelectronic devices, sensing, and bioimaging applications.
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Affiliation(s)
- Dineshkumar Sengottuvelu
- Dave
C. Swalm School of Chemical Engineering, 323 Presidents Circle, Mississippi State University, MS State, Mississippi 39762, United States
| | - Abdul Kalam Shaik
- Department
of Chemistry and Biochemistry, University
of Mississippi, Oxford, Mississippi 38677, United States
| | - Satish Mishra
- Dave
C. Swalm School of Chemical Engineering, 323 Presidents Circle, Mississippi State University, MS State, Mississippi 39762, United States
| | - Humayun Ahmad
- Dave
C. Swalm School of Chemical Engineering, 323 Presidents Circle, Mississippi State University, MS State, Mississippi 39762, United States
| | - Mahsa Abbaszadeh
- Dave
C. Swalm School of Chemical Engineering, 323 Presidents Circle, Mississippi State University, MS State, Mississippi 39762, United States
| | - Nathan I. Hammer
- Department
of Chemistry and Biochemistry, University
of Mississippi, Oxford, Mississippi 38677, United States
| | - Santanu Kundu
- Dave
C. Swalm School of Chemical Engineering, 323 Presidents Circle, Mississippi State University, MS State, Mississippi 39762, United States
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Self-enhanced electrochemiluminescence of luminol induced by palladium-graphene oxide for ultrasensitive detection of aflatoxin B 1 in food samples. Food Chem 2022; 381:132276. [PMID: 35121311 DOI: 10.1016/j.foodchem.2022.132276] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 01/23/2022] [Accepted: 01/25/2022] [Indexed: 12/13/2022]
Abstract
In this work, a novel and credible electrochemiluminescence immunoassay (ECLIA) was constructed for the ultrasensitive and highly selective detection of aflatoxin B1 (AFB1). Amino-functionalized 3D graphene hydrogel (NGH) served as the ECL platform with the self-enhanced ECL of luminol-palladium-graphene oxide (lum-Pd-GO) acting as a marker for the antibodies against AFB1. Pd-GO was synthesized by a self-redox method; it promotes the formation of reactive oxygen species, which are important to the ECL of luminol, from dissolved oxygen. The π-π conjunction between luminol and GO shortens their electron transfer distance, resulting in an amplified ECL signal (∼8.5 times larger than conventional luminol ECL). Moreover, 3D NGH, with its good conductivity, large surface area, and sufficient amino groups, was used to anchor gold nanoparticles (AuNPs), which subsequently immobilized bovine serum albumin (BSA)-AFB1 through Au-S bonds. The resultant, competitive ECLIA gave a relative low detection limit of 5 × 10-3 μg kg-1 and exhibited a broad linear relationship over the range of 0.05-50 μg kg-1. Finally, the proposed ECLIA was successfully used to analyze AFB1 contents in food samples. ECLIA: electrochemiluminescence immunoassay; AFs: Aflatoxins; HPLC: high-performance liquid chromatography.
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Ning G, Mu P, Li B, Liu J, Xiao Q, Huang S. Fluorine and nitrogen co-doped near-infrared carbon dots for fluorescence "on-off-on" determination of nitrite. Mikrochim Acta 2022; 189:230. [PMID: 35612770 DOI: 10.1007/s00604-022-05337-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 05/10/2022] [Indexed: 11/25/2022]
Abstract
A fluorescence "on-off-on" strategy was established for the determination of nitrite in aqueous solution based on fluorine and nitrogen co-doped near-infrared carbon dots (NIR-CDs). NIR-CDs were prepared via one-step hydrothermal method by using N-(4-aminophenyl)-acetamide and 4,5-difluorobenzene-1,2-diamine as precursors. The photoluminescence quantum yield of NIR-CDs reaches to 17.4%, and the optimal emission peak of NIR-CDs is 675 nm under excitation of 530 nm. The Stokes shift of NIR-CDs (145 nm) is higher than that of some CDs with longer emission wavelengths. The red bathophenanthroline disulfonic acid (BPS)-Fe2+ complex can quench the fluorescence of NIR-CDs via inner filter effect and static quench modes. Nitrite can oxidize Fe2+ to produce Fe3+ in acidic environment, resulting in not only the formation of colorless and unstable BPS-Fe3+ complex but also the fluorescence recovery of NIR-CDs. This fluorescence "on-off-on" phenomenon also comes with the color variation of the mixture, resulting in both the fluorescence and the visual determination of nitrite. Under optimal conditions, this assay exhibits a good linear range from 1 to 50 μM and a low detection limit of 0.056 μM for nitrite determination. The method showed good applicability for nitrite determination in soil extract, human urine, and water samples with acceptable results. A convenient fluorescence "on-off-on" strategy for nitrite detection based on fluorine and nitrogen co-doped near-infrared carbon dots (NIR-CDs) and bathophenanthroline disulfonic acid (BPS)-Fe2+ complex was innovatively established. This probe showed a low detection limit of 0.056 μM for nitrite in authentic samples, which offered a new sight for fluorescent and visual detection of nitrite in environmental protection and human health areas.
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Affiliation(s)
- Gan Ning
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning, 530001, China
| | - Pingping Mu
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning, 530001, China
| | - Bo Li
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning, 530001, China
| | - Jiajia Liu
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning, 530001, China
| | - Qi Xiao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning, 530001, China.
| | - Shan Huang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning, 530001, China.
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Al-Azmi A, Keshipour S. New bidental sulfur-doped graphene quantum dots modified with gold as a catalyst for hydrogen generation. J Colloid Interface Sci 2022; 612:701-709. [PMID: 35030346 DOI: 10.1016/j.jcis.2022.01.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 12/27/2021] [Accepted: 01/02/2022] [Indexed: 12/19/2022]
Abstract
Disadvantages of fossil fuels encourage researchers to develop clean combustion sources, in particular, H2 due to the high potential energy and safe by-products. Herein, Au was deposited on S-doped graphene quantum dots to obtain a heterogeneous photocatalyst for the degradation of formic acid toward H2 generation. Insertion of thiol groups on graphene quantum dots was carried out by self-condensation reaction of citric acid in the presence of Dimaval, as the thiol groups carrier. After the complexation of Au with the prepared S-doped graphene quantum dots, the catalytic activity of composite was evaluated in formic acid degradation to generate H2 under visible light. Au@S-doped graphene quantum dots demonstrated superior catalytic activity with the turnover frequency up to 112 h-1. The reaction enjoys significant benefits such as stability and recyclability of the catalyst, excellent reaction rate, and mild reaction conditions.
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Affiliation(s)
- Amal Al-Azmi
- Chemistry Department, Kuwait University, P. O. Box 5969, Safat 13060, Kuwait.
| | - Sajjad Keshipour
- Department of Nanotechnology, Faculty of Science, Urmia University, Urmia, Iran
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Ahuja V, Bhatt AK, Varjani S, Choi KY, Kim SH, Yang YH, Bhatia SK. Quantum dot synthesis from waste biomass and its applications in energy and bioremediation. CHEMOSPHERE 2022; 293:133564. [PMID: 35007612 DOI: 10.1016/j.chemosphere.2022.133564] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 12/31/2021] [Accepted: 01/06/2022] [Indexed: 06/14/2023]
Abstract
Quantum dots (QDs) are getting special attention due to their commendable optical properties and applications. Conventional metal-based QDs have toxicity and non-biodegradability issues, thus it becomes necessary to search for renewable precursor molecules for QDs synthesis. In recent years, biomass-based carbon rich QDs (CQDs) have been introduced which are mainly synthesised via carbonization (pyrolysis and hydrothermal treatment). These CQDs offered higher photostability, biocompatibility, low-toxicity, and easy tunability for physicochemical properties. Exceptional optical properties become a point of attraction for its multifaceted applications in various sectors like fabrication of electrodes and solar cells, conversion of solar energy to electricity, detection of pollutants, designing biosensors, etc. In recent years, a lot of work has been done in this field. This article will summarize these advancements along in a special context to biomass-based QDs and their applications in energy and the environment.
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Affiliation(s)
- Vishal Ahuja
- Department of Biotechnology, Himachal Pradesh University, Shimla, 171005, India
| | - Arvind Kumar Bhatt
- Department of Biotechnology, Himachal Pradesh University, Shimla, 171005, India
| | - Sunita Varjani
- Gujarat Pollution Control Board, Gandhinagar, 382010, Gujarat, India
| | - Kwon-Young Choi
- Department of Environmental Engineering, College of Engineering, Ajou University, Suwon, South Korea
| | - Sang-Hyoun Kim
- School of Civil and Environmental Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Yung-Hun Yang
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, 05029, Republic of Korea; Institute for Ubiquitous Information Technology and Applications, Seoul, 05029, Republic of Korea
| | - Shashi Kant Bhatia
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, 05029, Republic of Korea; Institute for Ubiquitous Information Technology and Applications, Seoul, 05029, Republic of Korea.
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Zhan X, Tong X, Gu M, Tian J, Gao Z, Ma L, Xie Y, Chen Z, Ranganathan H, Zhang G, Sun S. Phosphorus-Doped Graphene Electrocatalysts for Oxygen Reduction Reaction. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:1141. [PMID: 35407259 PMCID: PMC9000525 DOI: 10.3390/nano12071141] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 03/25/2022] [Accepted: 03/27/2022] [Indexed: 12/12/2022]
Abstract
Developing cheap and earth-abundant electrocatalysts with high activity and stability for oxygen reduction reactions (ORRs) is highly desired for the commercial implementation of fuel cells and metal-air batteries. Tremendous efforts have been made on doped-graphene catalysts. However, the progress of phosphorus-doped graphene (P-graphene) for ORRs has rarely been summarized until now. This review focuses on the recent development of P-graphene-based materials, including the various synthesis methods, ORR performance, and ORR mechanism. The applications of single phosphorus atom-doped graphene, phosphorus, nitrogen-codoped graphene (P, N-graphene), as well as phosphorus, multi-atoms codoped graphene (P, X-graphene) as catalysts, supporting materials, and coating materials for ORR are discussed thoroughly. Additionally, the current issues and perspectives for the development of P-graphene materials are proposed.
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Affiliation(s)
- Xinxing Zhan
- School of Chemistry and Material Science, Guizhou Normal University, Guiyang 550001, China; (X.Z.); (M.G.); (J.T.); (Z.G.); (L.M.)
| | - Xin Tong
- School of Chemistry and Material Science, Guizhou Normal University, Guiyang 550001, China; (X.Z.); (M.G.); (J.T.); (Z.G.); (L.M.)
- Key Laboratory of Low-Dimensional Materials and Big data, Guizhou Minzu University, Guiyang 550025, China;
| | - Manqi Gu
- School of Chemistry and Material Science, Guizhou Normal University, Guiyang 550001, China; (X.Z.); (M.G.); (J.T.); (Z.G.); (L.M.)
| | - Juan Tian
- School of Chemistry and Material Science, Guizhou Normal University, Guiyang 550001, China; (X.Z.); (M.G.); (J.T.); (Z.G.); (L.M.)
| | - Zijian Gao
- School of Chemistry and Material Science, Guizhou Normal University, Guiyang 550001, China; (X.Z.); (M.G.); (J.T.); (Z.G.); (L.M.)
| | - Liying Ma
- School of Chemistry and Material Science, Guizhou Normal University, Guiyang 550001, China; (X.Z.); (M.G.); (J.T.); (Z.G.); (L.M.)
| | - Yadian Xie
- Key Laboratory of Low-Dimensional Materials and Big data, Guizhou Minzu University, Guiyang 550025, China;
| | - Zhangsen Chen
- Centre Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique (INRS), 1650 Boulevard Lionel-Boulet, Varennes, QC J3X 1P7, Canada; (Z.C.); (H.R.); (G.Z.)
| | - Hariprasad Ranganathan
- Centre Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique (INRS), 1650 Boulevard Lionel-Boulet, Varennes, QC J3X 1P7, Canada; (Z.C.); (H.R.); (G.Z.)
| | - Gaixia Zhang
- Centre Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique (INRS), 1650 Boulevard Lionel-Boulet, Varennes, QC J3X 1P7, Canada; (Z.C.); (H.R.); (G.Z.)
| | - Shuhui Sun
- Centre Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique (INRS), 1650 Boulevard Lionel-Boulet, Varennes, QC J3X 1P7, Canada; (Z.C.); (H.R.); (G.Z.)
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Yin M, Wang W, Wei J, Chen X, Chen Q, Chen X, Oyama M. Novel dual-emissive fluorescent immunoassay for synchronous monitoring of okadaic acid and saxitoxin in shellfish. Food Chem 2022; 368:130856. [PMID: 34425333 DOI: 10.1016/j.foodchem.2021.130856] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 08/01/2021] [Accepted: 08/11/2021] [Indexed: 12/22/2022]
Abstract
In this work, we present a novel dual-emissive fluoroimmunoassay for synchronous monitoring of okadaic acid (OA) and saxitoxin (STX) using multicolor fluorescent labels composed of sulfur, phosphorous co-doped graphene quantum dots (S, P-GQDs), and ovalbumin (OVA)-coated gold nanoparticles (OVA-AuNPs). The novel OVA-AuNPs were prepared by the reduction of chloroauric acid under alkaline conditions using OVA as a reducing agent. Both S, P-GQDs and OVA-AuNPs exhibit bright fluorescence, more importantly, a large emission wavelength difference (Δλ = 156 nm) under an excitation of 400 nm and relatively independent fluorescence behavior, which are essential to realizing the dual-signal marks in a directly mixing system. Using a competitive fluorescence-linked immunosorbent assay (cFLISA) format, the dual-emissive cFLISA was successfully utilized to measure OA and STX contents in Alectryonella plicatula (commonly named as fingerprint oyster) and the detection results were in good agreement with the commercial enzyme-linked immunosorbent assay (ELISA) kits.
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Affiliation(s)
- Mingming Yin
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Weijie Wang
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Jie Wei
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China.
| | - Xiaomei Chen
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China.
| | - Quansheng Chen
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China; School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Xi Chen
- State Key Laboratory of Marine Environmental Science, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Munetaka Oyama
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8520, Japan
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Wang P, Zhang Y, Liu Y, Pang X, Liu P, Dong WF, Mei Q, Qian Q, Li L, Yan R. Starch-Based Carbon Dots for Nitrite and Sulfite Detection. Front Chem 2021; 9:782238. [PMID: 34805100 PMCID: PMC8602874 DOI: 10.3389/fchem.2021.782238] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 10/19/2021] [Indexed: 12/26/2022] Open
Abstract
Nitrite and sulfite play important roles in human health and environmental science, so it is desired to develop a facile and efficient method to evaluate NO2 - and SO3 2- concentrations. In this article, the use of green alternatives with the potential of multi-functionality has been synthesized to detect nitrite and sulfite based on fluorescent probe. The carbon dots (CDs) with starch as only raw materials show fluorescence turn "on-off-on" response towards NO2 - and SO3 2- with the limits of detection of 0.425 and 0.243 μМ, respectively. Once nitrite was present in the solution, the fluorescence of CDs was quenched rapidly due to the charge transfer. When sulfite was introduced, the quenching fluorescence of CDs was effectively recovered because of the redox reaction between NO2 - and SO3 2-, and thus providing a new way for NO2 - and SO3 2- detection. Owing to their excellent analytical characteristics and low cytotoxicity, the "on-off-on" sensor was successfully employed for intracellular bioimaging of NO2 - and SO3 2-.
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Affiliation(s)
- Panyong Wang
- School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Yan Zhang
- The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, China
| | - Yulu Liu
- School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
- CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou, China
| | - Xinpei Pang
- School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
- CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou, China
| | - Pai Liu
- CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou, China
| | - Wen-Fei Dong
- CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou, China
- Jinan Guokeyigong Science and Technology Development Co., Ltd, Jinan, China
| | - Qian Mei
- CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou, China
- Jinan Guokeyigong Science and Technology Development Co., Ltd, Jinan, China
| | - Qing Qian
- CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou, China
| | - Li Li
- CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Suzhou, China
| | - Ruhong Yan
- The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, China
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14
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Dorontić S, Jovanović S, Bonasera A. Shedding Light on Graphene Quantum Dots: Key Synthetic Strategies, Characterization Tools, and Cutting-Edge Applications. MATERIALS 2021; 14:ma14206153. [PMID: 34683745 PMCID: PMC8539078 DOI: 10.3390/ma14206153] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 10/07/2021] [Accepted: 10/14/2021] [Indexed: 01/09/2023]
Abstract
During the last 20 years, the scientific community has shown growing interest towards carbonaceous nanomaterials due to their appealing mechanical, thermal, and optical features, depending on the specific nanoforms. Among these, graphene quantum dots (GQDs) recently emerged as one of the most promising nanomaterials due to their outstanding electrical properties, chemical stability, and intense and tunable photoluminescence, as it is witnessed by a booming number of reported applications, ranging from the biological field to the photovoltaic market. To date, a plethora of synthetic protocols have been investigated to modulate the portfolio of features that GQDs possess and to facilitate the use of these materials for target applications. Considering the number of publications and the rapid evolution of this flourishing field of research, this review aims at providing a broad overview of the most widely established synthetic protocols and offering a detailed review of some specific applications that are attracting researchers’ interest.
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Affiliation(s)
- Slađana Dorontić
- “Vinča” Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, P.O. Box 522, 11000 Belgrade, Serbia;
| | - Svetlana Jovanović
- “Vinča” Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, P.O. Box 522, 11000 Belgrade, Serbia;
- Correspondence: (S.J.); (A.B.)
| | - Aurelio Bonasera
- Palermo Research Unit, Department of Physics and Chemistry—Emilio Segrè, University of Palermo, 90128 Palermo, Italy
- Correspondence: (S.J.); (A.B.)
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15
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Sharma AS, Ali S, Sabarinathan D, Murugavelu M, Li H, Chen Q. Recent progress on graphene quantum dots-based fluorescence sensors for food safety and quality assessment applications. Compr Rev Food Sci Food Saf 2021; 20:5765-5801. [PMID: 34601802 DOI: 10.1111/1541-4337.12834] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 08/04/2021] [Accepted: 08/08/2021] [Indexed: 12/23/2022]
Abstract
The versatile photophysicalproperties, high surface-to-volume ratio, superior photostability, higher biocompatibility, and availability of active sites make graphene quantum dots (GQDs) an ideal candidate for applications in sensing, bioimaging, photocatalysis, energy storage, and flexible electronics. GQDs-based sensors involve luminescence sensors, electrochemical sensors, optical biosensors, electrochemical biosensors, and photoelectrochemical biosensors. Although plenty of sensing strategies have been developed using GQDs for biosensing and environmental applications, the use of GQDs-based fluorescence techniques remains unexplored or underutilized in the field of food science and technology. To the best of our knowledge, comprehensive review of the GQDs-based fluorescence sensing applications concerning food quality analysis has not yet been done. This review article focuses on the recent progress on the synthesis strategies, electronic properties, and fluorescence mechanisms of GQDs. The various GQDs-based fluorescence detection strategies involving Förster resonance energy transfer- or inner filter effect-driven fluorescence turn-on and turn-off response mechanisms toward trace-level detection of toxic metal ions, toxic adulterants, and banned chemical substances in foodstuffs are summarized. The challenges associated with the pretreatment steps of complex food matrices and prospects and challenges associated with the GQDs-based fluorescent probes are discussed. This review could serve as a precedent for further advancement in interdisciplinary research involving the development of versatile GQDs-based fluorescent probes toward food science and technology applications.
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Affiliation(s)
| | - Shujat Ali
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | | | | | - Huanhuan Li
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Quansheng Chen
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China.,College of Food and Biological Engineering, Jimei University, Xiamen, China
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16
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Cheng R, Xiang Y, Guo R, Li L, Zou G, Fu C, Hou H, Ji X. Structure and Interface Modification of Carbon Dots for Electrochemical Energy Application. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2102091. [PMID: 34318998 DOI: 10.1002/smll.202102091] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Indexed: 05/15/2023]
Abstract
Carbon dots (CDs) as new nanomaterials have attracted much attention in recent years due to their unique characteristics. Notably, structure and interface modification (carbon core, edge, defects, and functional groups) of CDs have been considered as valid methods to regulate their properties, which contain electron transfer effect, electrochemical activity, fluorescence luminescent, and so on. Additionally, CDs with ultrasmall size, excellent dispersibility, high specific surface area, and abundant functional groups can guarantee positive and extraordinary effects in electrical energy storage and conversion. Therefore, CDs are used to couple with other materials by constructing a special interface structure to enhance their properties. Here, diverse structural and interfacial modifications of CDs with various heteroatoms and synergy effects are systematically analyzed. And not only several main syntheses of CDs-based composites (CDs/X) are summarized but also the merit and demerit of CDs/X in electrical energy storage are discussed. Finally, the applications of CDs/X in energy storage devices (supercapacitors, batteries) and electrocatalysts for practical applications are discussed. This review mainly provides a comprehensive summary and future prospect for synthesis, modification, and electrochemical applications of CDs.
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Affiliation(s)
- Ruiqi Cheng
- School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yinger Xiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Ruiting Guo
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Lin Li
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Guoqiang Zou
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Chaopeng Fu
- School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Hongshuai Hou
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Xiaobo Ji
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
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17
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Highly selective fluorometric detection of para-nitrophenol from its isomers by nitrogen-doped graphene quantum dots. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106389] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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18
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Sohal N, Maity B, Basu S. Recent advances in heteroatom-doped graphene quantum dots for sensing applications. RSC Adv 2021; 11:25586-25615. [PMID: 35478909 PMCID: PMC9037181 DOI: 10.1039/d1ra04248c] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 07/19/2021] [Indexed: 12/16/2022] Open
Abstract
Graphene quantum dots (GQDs) are carbon-based fluorescent nanomaterials having various applications due to attractive properties. But the low photoluminescence (PL) yield and monochromatic PL behavior of GQDs put limitations on their real-time applications. Therefore, heteroatom doping of GQDs is recognized as the best approach to modify the optical as well as electronic properties of GQDs by modifying their chemical composition and electronic structure. In this review, the new strategies for preparing the heteroatom (N, B, S, P) doped GQDs by using different precursors and methods are discussed in detail. The particle size, emission wavelength, PL emissive color, and quantum yield of recently developed heteroatom doped GQDs are reported in this article. The investigation of structure, crystalline nature, and composition of heteroatom doped GQDs by various characterization techniques such as high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) are also described. The recent progress on the impact of mono or co-doping of heteroatoms on PL behavior, and optical, electrochemiluminescence (ECL), and electrochemical properties of GQDs is also surveyed. Further, heteroatom doped GQDs with attractive properties used in sensing of various metal ions, biomolecules, small organic molecules, etc. by using various techniques with different limits of detection are also summarized. This review provides progressive trends in the development of heteroatom doped GQDs and their various applications.
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Affiliation(s)
- Neeraj Sohal
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology Patiala 147004 India
| | - Banibrata Maity
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology Patiala 147004 India
| | - Soumen Basu
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology Patiala 147004 India
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19
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Wang Z, Zhang L, Hao Y, Dong W, Liu Y, Song S, Shuang S, Dong C, Gong X. Ratiometric fluorescent sensors for sequential on-off-on determination of riboflavin, Ag + and l-cysteine based on NPCl-doped carbon quantum dots. Anal Chim Acta 2021; 1144:1-13. [PMID: 33453785 DOI: 10.1016/j.aca.2020.11.054] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/25/2020] [Accepted: 11/30/2020] [Indexed: 01/25/2023]
Abstract
The fluorescent sensor, especially ratiometric fluorescent sensor, is one of the most important applications for CQDs, which is becoming a research hotspot. Herein, carbon quantum dots co-doped with nitrogen, phosphorus and chlorine (NPCl-CQDs) were synthesized by acid-base neutralization reaction exothermic carbonization method. The as-fabricated NPCl-CQDs could emit blue fluorescence and possess excellent fluorescence properties. Based on the FRET, multifunctional and ratiometric fluorescent sensors for "on-off-on" sequential determination of riboflavin, Ag+, and Cys with good selectivity and high sensitivity were established. The linear range of riboflavin, Ag+, and Cys are 0.50-10.18 μM and 15.89-27.76 μM, 0.66-1.46 mM and 1.50-4.20 mM, and 0.01-0.15 μM and 0.15-0.36 μM with the limit of detection of 3.50 nM, 26.38 μM, and 0.96 nM, respectively. Furthermore, the sensors were successfully used to determine riboflavin, Ag+, and Cys in tablets, river water, and human urine with the recoveries of 95.2-104.0%, 95.6-102.0%, and 94.8-106.4%, respectively. More importantly, the as-constructed "on-off-on" NPCl-CQDs-based ratiometric fluorescent sensors were applied for detecting riboflavin, Ag+, and Cys in HeLa cells with satisfying results. The finding of this study shows the feasibility and effectiveness of the NPCl-CQDs as the available ratiometric fluorescent sensors for the determination of riboflavin, Ag+, and Cys in real samples and living cells.
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Affiliation(s)
- Zihan Wang
- Institute of Environmental Science, And School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China
| | - Li Zhang
- Institute of Environmental Science, And School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China
| | - Yumin Hao
- Institute of Environmental Science, And School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China
| | - Wenjuan Dong
- Institute of Environmental Science, And School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China
| | - Yang Liu
- Institute of Environmental Science, And School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China
| | - Shengmei Song
- Institute of Environmental Science, And School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China
| | - Shaomin Shuang
- Institute of Environmental Science, And School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China
| | - Chuan Dong
- Institute of Environmental Science, And School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China.
| | - Xiaojuan Gong
- Institute of Environmental Science, And School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China.
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20
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Nair RV, Thomas RT, Mohamed A, Pillai S. Fluorescent turn-off sensor based on sulphur-doped graphene quantum dots in colloidal and film forms for the ultrasensitive detection of carbamate pesticides. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104971] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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21
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Li C, Wang Y, Jiang H, Wang X. Biosensors Based on Advanced Sulfur-Containing Nanomaterials. SENSORS (BASEL, SWITZERLAND) 2020; 20:E3488. [PMID: 32575665 PMCID: PMC7349518 DOI: 10.3390/s20123488] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 06/15/2020] [Accepted: 06/17/2020] [Indexed: 01/03/2023]
Abstract
In recent years, sulfur-containing nanomaterials and their derivatives/composites have attracted much attention because of their important role in the field of biosensor, biolabeling, drug delivery and diagnostic imaging technology, which inspires us to compile this review. To focus on the relationships between advanced biomaterials and biosensors, this review describes the applications of various types of sulfur-containing nanomaterials in biosensors. We bring two types of sulfur-containing nanomaterials including metallic sulfide nanomaterials and sulfur-containing quantum dots, to discuss and summarize the possibility and application as biosensors based on the sulfur-containing nanomaterials. Finally, future perspective and challenges of biosensors based on sulfur-containing nanomaterials are briefly rendered.
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Affiliation(s)
| | | | | | - Xuemei Wang
- State Key Laboratory of Bioelectronics, National Demonstration Center for Experimental Biomedical Engineering Education, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China; (C.L.); (Y.W.); (H.J.)
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22
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Wang Q, Li L, Wu T, Kong X, Ma Q, Ma C. A graphene quantum dots-Pb 2+ based fluorescent switch for selective and sensitive determination of D-penicillamine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 229:117924. [PMID: 31839577 DOI: 10.1016/j.saa.2019.117924] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 11/30/2019] [Accepted: 12/06/2019] [Indexed: 06/10/2023]
Abstract
Taking consideration of metal-induced fluorescence quenching and excellent coordination effect of D-penicillamine (D-PA), a graphene quantum dots (GQDs)-based fluorescent switch for D-PA detection was designed and established firstly with the help of lead ions. GQDs obtained from citric acids made them rich in carboxyl and hydroxyl groups, giving GQDs the ability to combine with lead ions. As anticipated, the fluorescence intensity was quenched by Pb2+ through electron transfer process. Further, the addition of D-PA effectively recovered the fluorescence due to the departure of Pb2+ from GQDs aroused by the strong coordination between D-PA and Pb2+. Thus, a fluorescent switch was activated for D-PA detection. The fluorescence recovery efficiencies were found to be proportional to the concentration of D-PA in the range of 0.6-50 μmol L-1 and the detection limit was 0.47 μmol L-1. The real sample detection was performed in human urea sample and satisfactory recoveries of 96.84%-102.13% were obtained. The GQDs-Pb2+ based fluorescent switch sensing method was firstly established with low detection limit and wide linear range, making it a supplement and improvement for D-PA detection.
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Affiliation(s)
- Qi Wang
- Chemistry & Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, Shanxi 030008, China.
| | - Lingfang Li
- Chemistry & Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, Shanxi 030008, China
| | - Tingxuan Wu
- Chemistry & Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, Shanxi 030008, China
| | - Xiangpeng Kong
- Chemistry & Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, Shanxi 030008, China
| | - Qingguo Ma
- Chemistry & Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, Shanxi 030008, China
| | - Chunlei Ma
- Chemistry & Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, Shanxi 030008, China.
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23
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Sulfur modification of carbon materials as well as the redox additive of Na2S for largely improving capacitive performance of supercapacitors. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2019.113678] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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24
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Omer KM, Idrees SA, Hassan AQ, Jamil LA. Amphiphilic fluorescent carbon nanodots as a selective nanoprobe for nitrite and tetracycline both in aqueous and organic solutions. NEW J CHEM 2020. [DOI: 10.1039/d0nj00435a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The dispersibility of carbon dots in organic and/or aqueous solvents plays a critical role in various application fields.
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Affiliation(s)
- Khalid M. Omer
- Department of Chemistry
- University of Sulaimani
- Kurdistan Region
- Iraq
| | | | - Aso Q. Hassan
- Department of Chemistry
- University of Sulaimani
- Kurdistan Region
- Iraq
| | - Lazgin A. Jamil
- Department of Chemistry
- University of Zakho
- Kurdistan region
- Iraq
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